[libvirt] [PATCH 10/11] Fix busy-wait loop on closed file descriptor

When closing open streams after a client quits, the event callback was not removed. This mean that poll() was using a closed FD and returning POLLNVAL in a busy-wait loop. * daemon/stream.c: Disconnect stream callbacks --- daemon/stream.c | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/daemon/stream.c b/daemon/stream.c index d64fe73..cac54ea 100644 --- a/daemon/stream.c +++ b/daemon/stream.c @@ -108,6 +108,7 @@ remoteStreamEvent(virStreamPtr st, int events, void *opaque) remote_error rerr; memset(&rerr, 0, sizeof rerr); stream->closed = 1; + virStreamEventRemoveCallback(stream->st); virStreamAbort(stream->st); if (events & VIR_STREAM_EVENT_HANGUP) remoteDispatchFormatError(&rerr, "%s", _("stream had unexpected termination")); @@ -345,8 +346,10 @@ remoteRemoveClientStream(struct qemud_client *client, } } - if (!stream->closed) + if (!stream->closed) { + virStreamEventRemoveCallback(stream->st); virStreamAbort(stream->st); + } while (curr) { if (curr == stream) { @@ -429,6 +432,7 @@ remoteStreamHandleFinish(struct qemud_client *client, memset(&rerr, 0, sizeof rerr); stream->closed = 1; + virStreamEventRemoveCallback(stream->st); ret = virStreamFinish(stream->st); if (ret < 0) { @@ -462,6 +466,7 @@ remoteStreamHandleAbort(struct qemud_client *client, memset(&rerr, 0, sizeof rerr); stream->closed = 1; + virStreamEventRemoveCallback(stream->st); virStreamAbort(stream->st); if (msg->hdr.status == REMOTE_ERROR) -- 1.7.2.3